FMR LLC

Position in XENE — Xenon Pharmaceuticals Inc.

CIK 315066 BOSTON, MA

Back to XENE Full portfolio

Position in XENE

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$629,095,250

+$229,289,647 QoQ

Shares Held

10,818,491

+21.3% QoQ

Ownership

11.2%

of shares outstanding

% of Portfolio

0.04%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 99.97667881777598.ToString("F0")% Shared 0.ToString("F0")% None 0.023321182224027362.ToString("F0")%

Common Shares in XENE Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Mar 31, 2026

FMR LLC holds $49,682,018,247 across 354 Biotechnology names. XENE ranks #23 (1.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ALNY	Alnylam Pharmaceuticals, Inc.	14,579,166	$4,823,808,652
2	ARGX	Argenx SE	4,991,034	$3,644,702,577
3	MRNA	Moderna, Inc.	45,672,024	$2,320,138,818
4	ROIV	Roivant Sciences Ltd.	77,981,253	$2,160,080,705
5	INSM	INSMED Inc	13,160,167	$2,151,950,504
6	IONS	Ionis Pharmaceuticals Inc	24,556,637	$1,843,957,869
7	RPRX	Royalty Pharma plc	25,152,242	$1,206,553,046
8	REGN	Regeneron Pharmaceuticals, Inc.	1,518,192	$1,173,015,865

All Filings in XENE

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25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$629,095,250	10,818,491	+21.3%	Shares	Defined	2026-05-15
2025-12-31	$399,805,603	8,920,250	+0.0%	Shares	Defined	2026-02-17
2025-09-30	$358,094,114	8,918,907	+0.4%	Shares	Defined	2025-11-13
2025-06-30	$278,080,560	8,884,363	+7.2%	Shares	Defined	2025-08-14
2025-03-31	$278,045,590	8,287,499	+10.1%	Shares	Defined	2025-05-12
2024-12-31	$294,991,367	7,525,290	+8.8%	Shares	Defined	2025-02-13
2024-09-30	$272,349,218	6,917,684	+2.2%	Shares	Defined	2024-11-13
2024-06-30	$263,891,063	6,768,173	+2.5%	Shares	Defined	2024-08-13
2024-03-31	$284,208,780	6,601,830	+16.7%	Shares	Defined	2024-05-13
2023-12-31	$260,511,767	5,655,922	+33.0%	Shares	Defined	2024-02-13
2023-09-30	$145,277,902	4,252,866	-18.0%	Shares	Defined	2023-11-13
2023-06-30	$199,765,219	5,188,707	+9.7%	Shares	Defined	2023-08-11
2023-03-31	$169,209,714	4,727,849	+0.8%	Shares	Defined	2023-08-11
2022-12-31	$184,959,386	4,690,829	+0.5%	Shares	Defined	2023-02-13
2022-09-30	$168,578,299	4,669,759	+2.1%	Shares	Defined	2022-11-10
2022-06-30	$139,091,434	4,572,368	+19.3%	Shares	Defined	2022-08-12
2022-03-31	$117,189,360	3,833,476	-2.0%	Shares	Defined	2022-05-13
2021-12-31	$122,148,931	3,910,017	+27.9%	Shares	Defined	2022-02-14
2021-09-30	$46,707,231	3,056,756	-0.5%	Shares	Defined	2022-02-14
2021-06-30	$57,208,907	3,072,444	-0.5%	Shares	Defined	2021-08-13
2021-03-31	$55,261,667	3,087,244	+17.6%	Shares	Defined	2021-05-14
2020-12-31	$40,380,989	2,625,552	+0.0%	Shares	Defined	2021-02-08
2020-09-30	$29,054,543	2,624,620	+19.4%	Shares	Defined	2020-11-13
2020-06-30	$27,576,137	2,199,054	+38.5%	Shares	Defined	2020-08-24
2020-03-31	$18,002,658	1,587,536	—	Shares	Defined	2020-05-14
No filing history on record for this holder in this stock.